21771009

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{2549}}^1$

素因数の和:2641

約数の個数: 24

約数和(自身を含む): 34343400

約数和(自身を除く): 12572391

約数列:

[1, 3, 9, 13, 39, 73, 117, 219, 657, 949, 2549, 2847, 7647, 8541, 22941, 33137, 99411, 186077, 298233, 558231, 1674693, 2419001, 7257003, 21771009]

約数ペア:

[(1, 21771009), (3, 7257003), (9, 2419001), (13, 1674693), (39, 558231), (73, 298233), (117, 186077), (219, 99411), (657, 33137), (949, 22941), (2549, 8541), (2847, 7647)]